The advantages of rolling bearings and sliding bearings

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The advantages of rolling bearings and sliding bearings

Source: China Bearing Network Time: 2013-09-28

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Rolling bearings are compared to plain bearings; have the following advantages:
1. The friction coefficient of a rolling bearing is higher than that of a plain bearing. The friction coefficient of a plain bearing is 0. 08-0. 12; while the friction coefficient of a rolling bearing is only 0. 001-0.
2. Rolling bearings have been standardized, serialized and generalized; suitable for mass production and supply; easy to use and repair,
3. The rolling bearing is made of bearing steel; and it is subjected to heat treatment; therefore, the rolling bearing not only has high mechanical properties and long service life; but also can save the relatively expensive non-ferrous metal used for manufacturing the sliding bearing. The internal clearance of the rolling bearing is very good. 髁慵 髁慵 髁慵 髁慵 撸 撸 虼 虼 虼 辉 辉 一起 一起 一起 一起 一起 一起 一起 一起 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Some rolling bearings can accept both radial and axial loads; thus; can simplify the layout of bearing supports. Because the rolling bearing transmission efficiency is high; less heat; therefore; can reduce the cost of smooth oil; smooth protection is more labor-saving, 7. Rolling bearings can be conveniently used on uranium in any orientation in space. However, all things are divided into two; rolling bearings also have certain defects; the first is: The bearing capacity of the rolling bearing is much smaller than that of the sliding bearing of the same volume; therefore, the radial dimension of the rolling bearing is large. Therefore, in the case of accepting a large load and the case where the radial dimension is small and the layout demand is compact (such as the crankshaft bearing of the internal combustion engine) ; use more sliding bearings, 2. The rolling bearing has large oscillation and noise; the uniqueness is especially obvious in the later stage of operation; therefore; the need for precision is high, and there is no need for oscillation; the rolling bearing is difficult to serve; usually the sliding bearing is better. Rolling bearings are uniquely sensitive to foreign objects such as metal chips; once they enter foreign bodies in the bearing; they will have intermittent large oscillations and noise; they will also cause early damage. In addition, rolling bearings are prone to early damage due to metal clip impurities. Even if there is no early damage; the life of the rolling bearing has a certain limit. The total number of rolling bearings is shorter than that of the sliding bearing. However, the rolling bearing is better than the sliding bearing; each has excellent defects; each has a certain applicable occasion; The two cannot be completely replaced with each other; and each is carried out in a certain direction; expanding the scope of the individual; however; because of the outstanding strengths of the rolling bearing; there is a trend of latecomers. Currently; rolling bearings have been developed as the primary support type of machinery; More and more extensive.

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